package cn.tedu.ivos.audit.service.impl;

import cn.tedu.ivos.application.mapper.ApplicationMapper;
import cn.tedu.ivos.application.pojo.entity.Application;
import cn.tedu.ivos.audit.mapper.AuditMapper;
import cn.tedu.ivos.audit.pojo.dto.AuditQuery;
import cn.tedu.ivos.audit.pojo.dto.AuditSaveParam;
import cn.tedu.ivos.audit.pojo.entity.Audit;
import cn.tedu.ivos.audit.pojo.vo.AuditVO;
import cn.tedu.ivos.audit.service.AuditService;
import cn.tedu.ivos.base.enums.AuditStatusEnum;
import cn.tedu.ivos.user.mapper.UserMapper;
import cn.tedu.ivos.user.pojo.vo.UserVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.StringJoiner;

@Transactional
@Slf4j
@Service
public class AuditServiceImpl implements AuditService {
    @Autowired
    AuditMapper auditMapper;
    @Autowired
    UserMapper userMapper;
    @Autowired
    ApplicationMapper applicationMapper;

    @Override
    public void insertAudit(Application application) {
        log.debug("根据申请生成对应审批数据业务:{}", application);
        //1.获取审批人id集合
        List<Long> userIdList = application.getAuditUserIdList();
        //2.遍历集合,为每个遍历到的审批人生成审批数据
        for (int i = 0; i < userIdList.size(); i++) {
            Audit audit = new Audit();//3.创建空对象用来封装新增条件
            audit.setApplicationId(application.getId());//设置审批哪个申请单
            audit.setAuditUserId(userIdList.get(i));//设置审批人id
            audit.setAuditSort(i);//设置审批次序
            if(i == 0){//如果是第1条审批单
                audit.setAuditStatus(AuditStatusEnum.MY_PENGDING.getCode());//待我审核
            }else{
                audit.setAuditStatus(AuditStatusEnum.PENGDING.getCode());//待他人审核
            }
            audit.setCreateTime(new Date());//设置创建时间
            auditMapper.insert(audit);//审批数据入库
        }


    }

    @Override
    public List<AuditVO> selectAuditByApplicationId(Long id) {
        log.debug("根据申请单id查询审批数据业务:{}", id);
        return auditMapper.selectAuditByApplicationId(id);
    }

    @Override
    public List<AuditVO> selectAudit(AuditQuery auditQuery) {
        log.debug("查询审批数据业务:{}", auditQuery);
        List<AuditVO> list = auditMapper.selectAudit(auditQuery);
        for(int i = 0; i < list.size(); i++){
            AuditVO auditVO = list.get(i);
            assignAuditUserList(auditVO);
        }
        return list;
    }

    @Override
    public void updateAudit(AuditSaveParam auditSaveParam) {
        log.debug("更新审批数据业务:{}", auditSaveParam);
        Audit audit = new Audit();
        BeanUtils.copyProperties(auditSaveParam, audit);
        audit.setUpdateTime(new Date());
        //先更新自己的这条审批单数据
        auditMapper.update(audit);
        //准备当前审批的这条申请单数据，更新申请单
        Application application = new Application();
        application.setId(audit.getApplicationId());
        application.setCreateTime(new Date());
        /* 需要判断是通过还是驳回，分别处理 */
        if(audit.getAuditStatus().equals(AuditStatusEnum.AUDITED.getCode())){//审批通过
            //继续查审批单：统计未审批的审批单对应的所有未审批的审批单总数
            AuditQuery auditQuery = new AuditQuery();
            auditQuery.setApplicationId(audit.getApplicationId());
            Integer count = auditMapper.selectRestAuditCount(auditQuery);
            if(count>0){//还有未审批的审批单
                //继续封装查询条件，将后面那条审批单查出来
                auditQuery.setAuditSort(audit.getAuditSort()+1);
                List<AuditVO> auditVOList = auditMapper.selectAudit(auditQuery);
                if(auditVOList !=null && auditVOList.size()>0){
                    AuditVO auditVO = auditVOList.get(0);
                    //创建第2个实体类对象，更新第二条审批单
                    Audit audit2 = new Audit();
                    audit2.setId(auditVO.getId());
                    audit2.setAuditStatus(AuditStatusEnum.MY_PENGDING.getCode());
                    audit2.setUpdateTime(new Date());
                    auditMapper.update(audit2);
                }
            }else {//没有未申请的审批单了，刚刚更新的审批单就是最后一条审批单
                //设置申请单的状态为“已审核”，后续可以分配车辆了
                application.setStatus(AuditStatusEnum.AUDITED.getCode());
                applicationMapper.update(application);
            }
        }else {//审批驳回
            AuditQuery auditQuery=new AuditQuery();
            auditQuery.setApplicationId(audit.getApplicationId());
            List<AuditVO> auditVOList=auditMapper.selectAudit(auditQuery);
            //判断集合是否为空
            if(auditVOList !=null && auditVOList.size()>0){
                for(int i=0; i < auditVOList.size(); i++){
                    AuditVO auditVO = auditVOList.get(i);
                    if(auditVO.getAuditStatus().equals(AuditStatusEnum.PENGDING.getCode())){
                        auditMapper.deleteById(auditVO.getId());
                    }
                }
                //还需要设置申请单的状态为"已驳回”，并设置驳回原因
                application.setStatus(AuditStatusEnum.REJECT.getCode());
                application.setRejectReason(auditSaveParam.getRejectReason());
                applicationMapper.update(application);
            }
        }
    }

    private void assignAuditUserList(AuditVO auditVO) {
        List<Long> auditUserIdList = new ArrayList<>();
        List<String> auditUsernameList = new ArrayList<>();
        //根据传入的审批单VO中的申请单id,查到申请单对应的所有审批单
        List<AuditVO> auditVOList =
                auditMapper.selectAuditByApplicationId(auditVO.getApplicationId());
        //遍历审批单集合,依次取出每个审批单,以及审批单中的审批人id
        for(int i = 0; i < auditVOList.size(); i++){
            Long userId = auditVOList.get(i).getAuditUserId();
            auditUserIdList.add(userId);
            UserVO userVO = userMapper.selectById(userId);
            auditUsernameList.add(userVO.getUsername());
        }
        StringJoiner stringJoiner = new StringJoiner(",");
        for(String username : auditUsernameList){
            stringJoiner.add(username);
        }
        auditVO.setAuditUserIdList(auditUserIdList);
        auditVO.setAuditUsernameList(stringJoiner.toString());
    }
}
